Planar imaging in a mach 8 flow using sodium laser-induced fluorescence

A. P. Yalin, W. R. Lempert, M. R. Etz, P. J. Erbland, A. J. Smits, R. B. Miles

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

We report the use of sodium Laser-Induced Fluorescence (LIF) as a means to obtain planar images of mixing in hypersonic flow fields. Helium is used as a substitute for hydrogen for these studies, and is seeded with trace quantities of sodium. Initial experiments have been conducted with low mass flow rates of helium injected into the boundary layer and observed with planar laser-induced fluorescence. Images in the streamwise and plan view directions are taken at the 10 Hz repetition rate of the excitation laser. We present here the design of the sodium seeding apparatus, as well as a discussion of diagnostic issues such as quenching, saturation, and chemical reaction.

Original languageEnglish (US)
StatePublished - Jan 1 1996
EventAdvanced Measurement and Ground Testing Conference, 1996 - New Orleans, United States
Duration: Jun 17 1996Jun 20 1996

Other

OtherAdvanced Measurement and Ground Testing Conference, 1996
CountryUnited States
CityNew Orleans
Period6/17/966/20/96

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Yalin, A. P., Lempert, W. R., Etz, M. R., Erbland, P. J., Smits, A. J., & Miles, R. B. (1996). Planar imaging in a mach 8 flow using sodium laser-induced fluorescence. Paper presented at Advanced Measurement and Ground Testing Conference, 1996, New Orleans, United States.